Dynamo suspension.



j UNITED STATES `lA'IEN'I OFFICE.

GORHAM CROSBY, OF GLEN RIDGE, NEW JERSEY, ASSIG-NOB T0 GOULD 'COUPLER COM- PANY, A. CORPORATION 0F NEW YORK.

DYNAMO SUSPENSION.

Specification of Letters Patent.

Patented Oct. 9, 1917.

Application led Hay 20, 1915. Serial No. 29,275.

sions, of which the following is a specifi` cation.

My invention relates toimprovements in dynamo suspensions and more particularly to arrangements forl supporting dynamos on car trucks, where the dynamos are adapted to be driven from the car axle. -One object of my invention is to provide a simple construction having few parts, but yet in which the dynamo is easily accessible and may be readily removed for inspection and repairs. Further objects, features and advantages will more clearly appear from the detailed description given below taken in connection with the drawings which form a part of this specification. l

In the drawings Figure 1 is a plan view of a suspension applied to a car truck, embodying my improvements in one form. Fig. 2 is a front view thereof; Fig. 3 is a section taken on the line 3-3 of Fig. 1. Fig. 4 is a similar view illustrating a modiiication.

Referring to Figs. 1. 2 and 3, 1 represents a car truck, provided with side sills 2, and depressed end sills asvshown at 3, and safety sills 4, the safety sills 4 being located between the car wheels 5, which are carried on the axle 6. "Lying adjacent""the safety sills 4 and secured to the center sill 7, by means of bolts 8, are two supporting lars '9, passing over the depressed end sill 3.v

The bars 9, after passing over the end sill 3, are bent downwardly sli htly, as at 10 thence they extend outwardl horizontally, and at their outer ends are bent backwardly, 'upwardly and outwardly, to form lateral brace portions 11,the ends of which portions are bolted to the truck at 12, supported upon the bars 9; adjacent their outer ends are two blocks 13, provided with depending ears 14, passing down along the side ofthe bar 9, lwhich ears are bolted to the bar 9 by means of bolts 15, passing through slots 16, in the bar 9, in order that the slides or blocks 13 may be adjusted longitudinally on the bars 9. 17 represents a cross bar or rod,. extending between the-outer ends of the bars 9 and held thereon vby mearns of blocks 13 and'cap plates 18, bolted thereover, and to the blocks 13 by means of bolts 19. The bar 17 is provided with collars 20, and nuts 21 on each en d of rods 17, to prevent lateral movement ofthe bar 17.

A dynamo is shown at 22 land is provided with lugs 23, preferably cast integral therewith, which lugs are apertured to engage the rod or cross piece 17, so that the dynamo is pivotally suspended from the cross piece 17. Collars 24 clamped to the rod 17 in any desired position prevent lateral movement of the dynamo, on the rod 17 but by loosening the collars .24, the dynamo may be adjusted to any desired position laterally on the rod 17. The rod or cross piece 17 is arranged substantially parallel to the car axle and the dynamo is driven by means of a belt 25, passing over a pulley 26, on the dynamo and a pulley 27 on the car axle. In order to apply the proper tension to the belt for driving the dynamo, I provide two' arms or members 28, each being bolted to the depressed center sill as at 29, and extending downwardly and horizontally beneath the dynamo, members 28 at their outer ends are bent upwardly as at 30, and rods 31 pass through apertures therein, the inner ends ofthe rods 31 being pivotally secured to the dynamo at 32, and being encircled at their outer ends by means of springs 33. The rods are screw-threaded at their outer ends, and have applied thereto-hand nuts 34 for the nurpose'fof adjusting the tension on the springs 33. It will be seen that as arranged in Figs. 1, 2 and 3, the pivotal support 17 of the dynamo is arranged outside of the center of the dynamo, s0 that the weight of the dynamo tends to keep the belt taut.r The tension devices, however, comprising rods 31, springs 33 and nuts 34 are provided in order to provide increased tension, or make the tension more uniform. It will be seen that either end of the dynamo may be adjusted toward and from the car axle independently of the other end, by moving the bolts 15 longitudinally in the slots 16, and tightening them up when the parts are brought to the desired position. Likewise the dynamo may be adjusted laterally along the bar 17,; by loosening the collars 24 and then securing them upon vthe rod in the desired position.

so that the dynamo pulley 26 may be broughtinto accurate alinement lwith ,the pulley 27. y

ln the arrangement shown in Fig. 4, the construction is substantially thev same, except that the dynamo is arranged to hang vertically, with its center normally below the pivoting cross rod 17. Also in Fig. 4 the tension device is shown on the inside and for this purpose vertical bars 40 are bolted tothe sill 3 and aperturedat their lower end to accommodate a rod 41. The tensionspring 42 is arranged between the bar 40 and the dynamo, to which therod 41 is pivoted at 43, the spring 42 encircling the rod 41. A hand nut 44 is screw-threaded on the rod 41 between the spring 42 and the dynamo for the purpose of adjusting the tension on the spring. The collar 45 on the rod 41 prevents the rod 41 from slipping out of the aperture in the bar 40. j

lt will be seen that the arrangement is extremely vsimple and that the dynamo is easily accessible for repairs and inspection. -Should it be desired to remove the dynamo, it is only necessary to remove the cap plates 18, and then by taking hold of each end of the cross piece 17, the cross piece together with the dynamo is easily carried away with the collars 20 and nuts 2l thereon. When put back into place, the dynamo will assume the correct position with regard to the car axle and the pulleys will be in the same alinement.

By removing the collar 45, the' rod 41 slips out of the bar 4() and may be removed with the? dynamo.

By arranging the bars 9 adjacent the safety sills 4 instead of adjacent side sills 2, the cross piece 17 is much shortened. By having the bars pass over the depressed center sill 3,' the cross bar 17 is lower than it otherwise would be, so that it does not interfere with the center beams or other apparatus attached to the bottom of the car body. By extending the arms or members 28 beneath the dynamo, they will act to catch the dynamo in case it should fall for any reason.

Although l have described my improvements in great detail and with respect to particular embodiments thereof, I do not desire to be limited to the details shown and described, since many changes and modifications may Well'be made without departing from the spirit and scope of my invention in its broaderaspects.

Having fully and clearly described my invention, what-l claim as new and `desire to secure by Letters Patent of the AUnited States is; p Y

l.k The combination with a car truck 'of two supporting bars extending from the truck, said bars being bent backwardly, upwardly and outwardly, and secured to the truck to form braces for the Y. supporting bars, a horizontal bar extending between the supporting bars and a dynamo pivotally `suspended from said horizontal bar and driven from the car axle.

2. The combination with a car truck having a depressed center sill and safety sills between'the car wheels, of two supporting bars each extending adjacent one of the safety sills and over the depressed center sill and outwardly from the truck, a dynamo pivotally supported by said supporting bars and driven from the car axle,

means whereby the-supporting pivotalaxis of the dynamo may be adjusted toward and from the truck and tension means tending to swing the dynamo away from the car axle.

3. rllhe combination with a car truck having a depressed end sill and" safety sills between the car wheels, of two supporting bars each extending adjacent one of the safety sills and over the depressed end sill and outwardly from the truck, a dynamo pivotally supported by said supporting bars and driven by the car axle, a member secured to said depressed end sill and extendl ing outwardly and forwardly of the dynamo and tension means cooperating with said member tending to swing the dynamo away from the car axle.

4. The combination with a car truck having a depressed center sill and Ksafety sill o-f two supporting bars, one on each side of the truck, passing adjacent the safety sills and over the depressed end sill, the outer ends of said bars being bent backwardy, upwardly and outwardly and secured to the truck' to form braces for the supporting bars, a block carried by each supporting bar, a horizontal cross rod secured at its ends to said blocks and extending substantially parallel to the car axle, a dynamo pivotally suspended from said cross bar, a member secured to the GORHAM CROSBY. 

